http://www.cruisersforum.com/forums/f134/how-to-use-a-samsung-siii-mini-...
First download from play.google.com/store ShareGPS Beta
https://play.google.com/store/apps/details?id=com.jillybunch.shareGPS
Android app for sharing GPS data with a PC mapping application
See website: http://sharedroid.jillybunch.com/
Detailed instructions for Connecting via USB with Franson GpsGate (needed with shareGPS)
Note that Franson GpsGate will also work with wifi and bluetooth.
More installation instructions: http://sharedroid.jillybunch.com/user.html
Now download for the Laptop adb.exe at http://forum.xda-developers.com/showthread.php?t=2588979
Run it on the Laptop in a command prompt box as “adb forward tcp:50000 tcp:50000” (without the quotation marks)
Now setup OpenCPN to receive the NMEA strings. Goto settings → connections. Select as Properties “Network” “TCP” Adress “127.0.0.1” and Dataport “50000” and click “Apply”
Now Run on the Phone ShareGPS and go to “settings” deactivate “Use Bluetooth” - Activate “Use USB” Choose your Format and activate “Create NMEA”
Now the GPS will RUN, not forgetting to activate the GPS function on the phone.
And Opencpn works with the GPS ( my boat seems to be in my garden)